Thursday, August 1, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, AUGUST 1, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0437E
SUNSET: 1903E
ABOVE AVERAGE TEMPERATURES WITH HIGHER DEW POINTS TODAY….
Skies have been partly cloudy for much of the day, with increasing
cloud cover in the afternoon hours.
Temperatures have climbed to above normal levels quite quickly,
which is part of the reason that the region is under a heat advisory.
Dew points have been uncomfortable, holding in the low 70’s, really
adding a muggy feel to the air.
The wind has been steady for much of the day today, with an average
of about 9 mph and mostly from the WNW. The peak gust for the day
so far occurred just after 1pm with a speed of about 20 mph.
Visibility has been limited to about 30 miles all day due to the
hazy conditions.
The maximum temperature so far today is 90F, which is 8 degrees
above the normal high of 82F. The minimum temperature since midnight
is 71F, which is 7 degrees above the normal low of 64F.
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PRELIMINARY STATS FOR JULY 2024
TEMPERATURE, Deg. F
Avg. Max. 83.6 [+1.9]
Avg. Min. 66.7 [+2.9]
Mean 75.2 [+2.5]
24-hour corrected mean: 74.0
Max. for month: 92F on the 15th and 16th
Min. for month: 59F on the 26th
HEATING DEGREE DAYS
Total heating units: 0 [-007]
Total for the season: 0 [-007]
Total for last season: 0
COOLING DEGREE DAYS
Total cooling units: 319 [+071]
Total for the season: 497 [+110]
Total for last season: 422
PRECIPITATION, Inches
Total: 2.57 [-0.90]
Greatest in 24 hrs: 0.92 on the 17th-18th
SNOWFALL, Inches
Total: 0.0 [ 0.0]
Greatest in 24 hrs: 0.0 on the N/A
WIND, mph
Avg. uncorrected wind speed: 9.5 mph
Avg. corrected wind speed: 10.1 mph
Prevailing wind direction: South-Southwest [26%]
Peak gust and direction: 46 SSW on the 31st
SUNSHINE:
Campbell-Stokes card minutes: 14970 of a possible 26682, or 56%
Astronomical total minutes: 15559 of a possible 27719, or 56%
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus, few cirrus all quadrants
Temperature: 74F; Dew Point: 71F; Relative Humidity: 88%
Wind: WNW @ 7 kts
Sea-level pressure: 1012.7 mb; 29.91 in. Hg: rising, then more
slowly
Visibility: 30 miles, hazy
6-hr Max temp: 74F
6-hr Min temp: 71F
24-hr Precip: 0.06 inches
BHO SA 1155 E150 BKN 250 BKN 30 127/74/71/2907/991/ HAZY/
8/054 51016 70006 10074 20071
10 A.M.
Weather: Scattered altocumulus, thin scattered cirrus, few
cumulus ESE-S-SW
Temperature: 81F; Dew Point: 71F; Relative Humidity: 72%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1013.9 mb; 29.94 in. Hg: rising, then more
slowly
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 150 SCT 250 -SCT 30 139/81/71/3006/994/ FEW CU ESE-S-SW
HAZY WND LGT/ 8/151 51012
1 P.M.
Weather: Broken cumulus, broken cirrus
Temperature: 89F; Dew Point: 70F; Relative Humidity: 54%
Wind: W @ 8 kts
Sea-level pressure: 1012.8 mb; 29.91 in. Hg: falling, then more
slowly
Visibility: 30 miles, hazy
6-hr Max temp: 90F
6-hr Min temp: 74F
6-hr Precip: 0.00 inches
BHO SA 1755 E55 BKN 250 BKN 30 128/89/70/2608/991/ HAZY/ 8/201
56011 10090 20074
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SUMMARY FOR WEDNESDAY, JULY 31, 2024
TEMPERATURE (DEGREES F)
MAX…….83 NORMAL…..82
MIN…….71 NORMAL…..64
MEAN……77 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+4
TOTAL DEPARTURE FOR THE MONTH…………………….+81 [+2.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-7
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-7
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY……………12 DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE MONTH…………..319 DEPARTURE…….+71
TOTAL COOLING UNITS FOR THE SEASON………….497 DEPARTURE……+110
TOTAL COOLING UNITS LAST SEASON TO DATE……..422 DEPARTURE…….+75
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated
F420C (Official)……….E46 SSW @ 12:52 P.M.
VECTOR #1 (1-Sec)……….45 S @ 12:51 P.M.
VECTOR #2 (1-Sec)……….44 S @ 12:51 P.M.
DAVIS #1……………….47 S @ 12:51 P.M.
DAVIS #2 ………………48 S @ 12:06 P.M.
RMY #1 (Instantaneous)…..46 S @ 12:51 P.M.
RMY #2 (Instantaneous)…..47 S @ 12:51 P.M.
MERLIN…………………41 S
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 SSW @ 12:54 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..29 @ 12:52 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..33 @ 12:51 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………30 S @ 12:53 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………36 S @ 12:51 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..29 SSW @ 12:52 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..33 W @ 12:51 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……14.6 SSW [350 total miles]
VECTOR #1…………….14.6
VECTOR #2…………….15.8
DAVIS #1……………..14.2 S
DAVIS #2……………..16.6 SSW
RMY #1……………….14.2 SSW
RMY #2……………….16.0 S
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.06 DEPARTURE…..-0.06
TOTAL PRECIPITATION FOR THE MONTH…………..2.57 DEPARTURE…..-0.90
TOTAL PRECIPITATION FOR THE YEAR (2024)…….38.25 DEPARTURE…..+7.55
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PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
7/1 77/63/70/-1/0.07/722/79 29 N VEC1 27 N RMY 28 TSTM
7/2 80/60/70/-1/0.00/886/97 20 N VEC1 20 N RMY 19
7/3 84/62/73/+1/0.00/856/94 25 S VEC1 25 S RMY 26
7/4 85/62/74/+2/0.04/392/43 28 SSW VEC1 28 SSW RMY 28
7/5 84/68/76/+4/0.22/146/16 29 SSW VEC1 29 SSW RMY 29
7/6 77/71/74/+2/0.10/009/01 31 SW VEC1 33 SSW RMY 33
7/7 88/72/80/+8/0.00/345/38 15 SW VEC1 15 SW RMY 14
7/8 91/71/81/+9/0.00/780/86 17 NW VEC1 18 NW RMY 18
7/9 88/72/80/+7/T/534/59 26 SSW VEC1 27 SSW RMY 29
7/10 88/72/80/+7/0.00/552/61 38 SSW VEC1 37 SSW RMY 38
7/11 87/71/79/+6/0.01/470/52 41 SSW VEC1 40 SSW RMY 41
7/12 85/69/77/+4/0.05/478/53 32 SW VEC1 32 SW RMY 32
7/13 80/72/76/+3/0.64/234/26 28 SW VEC1 25 SW RMY 26
7/14 88/69/79/+6/0.00/809/90 18 SW VEC1 18 SW RMY 19
7/15 92/70/81/+8/0.07/539/60 28 WSW VEC1 27 WSW RMY 28 TSTM
7/16 92/72/82/+9/T/797/89 33 SW VEC1 34 SW RMY 34
7/17 89/71/80/+7/0.37/599/67 38 W VEC1 36 W RMY 37 TSTM
7/18 85/68/77/+4/0.55/429/48 37 W VEC1 37 W RMY 38 TSTM
7/19 82/61/72/-1/0.00/864/97 24 N VEC1 24 NNW RMY 23
7/20 85/63/74/+1/T/747/84 30 WSW VEC1 31 WSW RMY 32
7/21 86/68/77/+4/T/630/71 18 WSW VEC1 18 WSW RMY 18
7/22 83/66/75/+2/T/452/51 24 SSW VEC1 23 SSW RMY 23
7/23 75/65/70/-3/0.02/027/03 17 ESE VEC1 17 SSE RMY 17
7/24 70/64/67/-6/0.09/009/01 16 ESE VEC1 16 ESE RMY 15
7/25 80/64/72/-1/0.12/009/01 28 WNW VEC1 28 WNW RMY 29 TSTM
7/26 83/59/71/-2/0.00/835/95 25 N VEC1 25 N RMY 26
7/27 84/63/74/+1/0.00/702/80 17 SE VEC1 17 SE RMY 16
7/28 82/62/72/-1/0.04/533/61 18 ESE VEC1 18 SE RMY 18
7/29 73/61/67/-6/0.12/096/11 21 S VEC1 21 SSE RMY 20
7/30 87/67/77/+4/0.00/713/82 29 SW VEC1 29 SW RMY 30
7/31 83/71/77/+4/0.06/365/42 46 SSW VEC1 45 S RMY 46
8/1 The low since midnight is 71F, the daily normal low is 64F.
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JULY DAILY RECORDS TO DATE
NONE.
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 1
HIGH 97F IN 1917
LOW 49F IN 1891
PRECIP 3.61 INCHES IN 1927
PEAK GUST 41 MPH NNW IN 1985
RECORDS FOR AUGUST 2
HIGH 101F IN 1975 [STATION RECORD MAXIMUM – Tied with 8/10/1949]
LOW 50F IN 1929, 1947
PRECIP 1.94 INCHES IN 1946
PEAK GUST 50 MPH SW IN 2006
TODAY’S REPORT PREPARED BY: Amanda Joly
